Overall Rating	Gold
Overall Score	66.39
Liaison	Michelle Patterson
Submission Date	March 4, 2022

STARS v2.2

Washington University in St. Louis
OP-2: Greenhouse Gas Emissions

Status	Score	Responsible Party
	3.23 / 8.00	Phil Valko Assistant Vice Chancellor for Sustainability Office of Sustainability

"---" indicates that no data was submitted for this field

Scope 1 and Scope 2 GHG emissions

Gross GHG emissions

Gross Scope 1 and Scope 2 greenhouse gas (GHG) emissions:

	Performance year	Baseline year
Gross Scope 1 GHG emissions from stationary combustion	48,965 Metric tons of CO2 equivalent	67,349 Metric tons of CO2 equivalent
Gross Scope 1 GHG emissions from other sources	401.40 Metric tons of CO2 equivalent	376 Metric tons of CO2 equivalent
Gross Scope 2 GHG emissions from imported electricity	182,425 Metric tons of CO2 equivalent	252,123 Metric tons of CO2 equivalent
Gross Scope 2 GHG emissions from imported thermal energy	0 Metric tons of CO2 equivalent	0 Metric tons of CO2 equivalent
Total	231,791.40 Metric tons of CO2 equivalent	319,848 Metric tons of CO2 equivalent

Carbon sinks

Figures needed to determine net carbon sinks:

	Performance year	Baseline year
Third-party verified carbon offsets purchased	0 Metric tons of CO2 equivalent	0 Metric tons of CO2 equivalent
Institution-catalyzed carbon offsets generated	0 Metric tons of CO2 equivalent	0 Metric tons of CO2 equivalent
Carbon storage from on-site composting	0 Metric tons of CO2 equivalent	0 Metric tons of CO2 equivalent
Carbon storage from non-additional sequestration	0 Metric tons of CO2 equivalent	---
Carbon sold or transferred	0 Metric tons of CO2 equivalent	0 Metric tons of CO2 equivalent
Net carbon sinks	0 Metric tons of CO2 equivalent	0 Metric tons of CO2 equivalent

If total performance year carbon sinks are greater than zero, provide:

A brief description of the carbon sinks, including vendor, project source, verification program and contract timeframes (as applicable):

---

Adjusted net GHG emissions

Adjusted net Scope 1 and Scope 2 GHG emissions:

	Performance year	Baseline year
Adjusted net GHG emissions	231,791.40 Metric tons of CO2 equivalent	319,848 Metric tons of CO2 equivalent

Performance and baseline periods

Start and end dates of the performance year and baseline year (or three-year periods):

	Performance year	Baseline year
Start date	July 1, 2020	July 1, 2009
End date	June 30, 2021	June 30, 2010

A brief description of when and why the GHG emissions baseline was adopted:

Washington University completed its first GHG inventory in early 2009 and established it's first GHG reduction goal in spring of 2010.

Part 1. Reduction in GHG emissions per person

Weighted campus users

Figures needed to determine “Weighted Campus Users”:

	Performance year	Baseline year
Number of students resident on-site	4,902	3,998
Number of employees resident on-site	13	20
Number of other individuals resident on-site	1,125	1,124
Total full-time equivalent student enrollment	16,459	11,943
Full-time equivalent of employees	15,821	11,501
Full-time equivalent of students enrolled exclusively in distance education	222	0
Weighted Campus Users	26,397.25	19,711.50

Metrics used in scoring for Part 1

Adjusted net Scope 1 and 2 GHG emissions per weighted campus user:

	Performance year	Baseline year
Adjusted net Scope 1 and 2 GHG emissions per weighted campus user	8.78 Metric tons of CO2 equivalent	16.23 Metric tons of CO2 equivalent

Percentage reduction in adjusted net Scope 1 and Scope 2 GHG emissions per weighted campus user from baseline:

45.89

Part 2. GHG emissions per unit of floor area

Performance year floor area

Gross floor area of building space, performance year:

11,302,973 Gross square feet

Floor area of energy intensive building space, performance year:

	Floor area
Laboratory space	1,406,800 Square feet
Healthcare space	847,209 Square feet
Other energy intensive space	1,989,311 Square feet

EUI-adjusted floor area, performance year:

17,800,302 Gross square feet

Metric used in scoring for Part 2

Adjusted net Scope 1 and 2 GHG emissions per unit of EUI-adjusted floor area, performance year:

0.01 MtCO2e per square foot

A brief description of the institution’s GHG emissions reduction initiatives:

-Significant retrocommissioning initiatives for existing buildings, targeting the most energy intensive spaces
-Lighting retrofits to LEDs
-Upgrades to utility systems, including addition of heat recovery chillers, variable speed drives, pipe insulation, system optimization, using cool outside air to provide "free cooling"
-On-site solar

Website URL where information about the institution's GHG emissions is available:

https://sustainability.wustl.edu/vision-progress/energy-emissions/

Additional documentation to support the submission:

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Data source(s) and notes about the submission:

Gross square footage in OP2 differs from gross square footage because the University’s 2010 – 2020 greenhouse gas reduction goal focused on the University’s two main campuses in order to strike a balance between impact, effort to track data, and focused implementation. Baseline data and subsequent year data reported here are for the main academic, medical and residential campuses (Danforth, S40, and School of Medicine) and do not include two administrative campuses (West and North) or the university's other holdings. PRE4 includes Danforth, S40, School of Medicine, satellite administrative buildings, and off-campus housing. It’s important to note that while the GHG goal has been focused on the most energy intensive subset of our holdings (the two main campuses and on-campus housing), we have made significant strides reducing energy use and emissions throughout our holdings. This includes a multi-year set of gut renovations of approximately 100 historic apartment buildings that added significant interior insulation, high efficiency windows, and more efficient HVAC systems, among other things. In addition, the University’s largest solar array (800+ kw) is located on North Campus. The data reported here does not account for the energy use at these satellite sites or take credit for the reductions at the satellite sites.

Similarly, weighted campus users were only included for the campuses within the scope of the reported emissions data.

The information presented here is self-reported. While AASHE staff review portions of all STARS reports and institutions are welcome to seek additional forms of review, the data in STARS reports are not verified by AASHE. If you believe any of this information is erroneous or inconsistent with credit criteria, please review the process for inquiring about the information reported by an institution or simply email your inquiry to stars@aashe.org.